Dynamics of Polymers in Flowing Colloidal Suspensions
Using hydrodynamic simulations we examine the behavior of single polymers in a confined colloidal suspension under flow. We study the conformations of both, collapsed and noncollapsed polymers. Our results show that the presence of the colloids has a pronounced effect on the unfolding and refolding...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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American Physical Society (APS)
2012
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| Online Access: | http://hdl.handle.net/1721.1/68686 https://orcid.org/0000-0001-5554-1283 |
| _version_ | 1811081668157505536 |
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| author | Chen, Hsieh Alexander-Katz, Alfredo |
| author2 | Massachusetts Institute of Technology. Department of Materials Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Materials Science and Engineering Chen, Hsieh Alexander-Katz, Alfredo |
| author_sort | Chen, Hsieh |
| collection | MIT |
| description | Using hydrodynamic simulations we examine the behavior of single polymers in a confined colloidal suspension under flow. We study the conformations of both, collapsed and noncollapsed polymers. Our results show that the presence of the colloids has a pronounced effect on the unfolding and refolding cycles of collapsed polymers, but does not have a large effect for noncollapsed polymers. Further inspection of the conformations reveals that the strong flow around the colloids and the direct physical compressions exerted on a globular polymer diffusing in between colloidal shear bands largely facilitate the initiation and unraveling of the globular chains. These results are important for rheological studies of (bio)polymer-(bio)colloid mixtures. |
| first_indexed | 2024-09-23T11:50:30Z |
| format | Article |
| id | mit-1721.1/68686 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T11:50:30Z |
| publishDate | 2012 |
| publisher | American Physical Society (APS) |
| record_format | dspace |
| spelling | mit-1721.1/686862022-10-01T06:23:57Z Dynamics of Polymers in Flowing Colloidal Suspensions Chen, Hsieh Alexander-Katz, Alfredo Massachusetts Institute of Technology. Department of Materials Science and Engineering Alexander-Katz, Alfredo Chen, Hsieh Alexander-Katz, Alfredo Using hydrodynamic simulations we examine the behavior of single polymers in a confined colloidal suspension under flow. We study the conformations of both, collapsed and noncollapsed polymers. Our results show that the presence of the colloids has a pronounced effect on the unfolding and refolding cycles of collapsed polymers, but does not have a large effect for noncollapsed polymers. Further inspection of the conformations reveals that the strong flow around the colloids and the direct physical compressions exerted on a globular polymer diffusing in between colloidal shear bands largely facilitate the initiation and unraveling of the globular chains. These results are important for rheological studies of (bio)polymer-(bio)colloid mixtures. National Science Foundation (U.S.) (CAREER Award 1054671) DuPont (Firm) 2012-01-27T19:47:08Z 2012-01-27T19:47:08Z 2011-09 2011-04 Article http://purl.org/eprint/type/JournalArticle 0031-9007 1079-7114 http://hdl.handle.net/1721.1/68686 Chen, Hsieh, and Alfredo Alexander-Katz. “Dynamics of Polymers in Flowing Colloidal Suspensions.” Physical Review Letters 107.12 (2011): n. pag. Web. 27 Jan. 2012. © 2011 American Physical Society https://orcid.org/0000-0001-5554-1283 en_US http://dx.doi.org/10.1103/PhysRevLett.107.128301 Physical Review Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Physical Society (APS) APS |
| spellingShingle | Chen, Hsieh Alexander-Katz, Alfredo Dynamics of Polymers in Flowing Colloidal Suspensions |
| title | Dynamics of Polymers in Flowing Colloidal Suspensions |
| title_full | Dynamics of Polymers in Flowing Colloidal Suspensions |
| title_fullStr | Dynamics of Polymers in Flowing Colloidal Suspensions |
| title_full_unstemmed | Dynamics of Polymers in Flowing Colloidal Suspensions |
| title_short | Dynamics of Polymers in Flowing Colloidal Suspensions |
| title_sort | dynamics of polymers in flowing colloidal suspensions |
| url | http://hdl.handle.net/1721.1/68686 https://orcid.org/0000-0001-5554-1283 |
| work_keys_str_mv | AT chenhsieh dynamicsofpolymersinflowingcolloidalsuspensions AT alexanderkatzalfredo dynamicsofpolymersinflowingcolloidalsuspensions |